In this dialog box you can edit the reference property of an association class.
A reference property is a pointer to another class (or instance).
For each instance of the referred-to class, you can either
1) directly edit the value of the key properties, or
2) select an instance of the referred-to class, which will
define the key properties from that instance.
To directly edit the value of any key property, click on its cell under the Value column.
Note: If you are creating a static association instance to be stored in the repository, the reference itself must point to a static instance in the repository.